Pencil is an open-source GUI prototyping tool that's available for ALL platforms. Pencil is built for the purpose of providing a free and open-source GUI prototyping tool. Developed by Pascal Naidon and Patrick Corrieri
License: Open Source
Anime Studio is a powerful animation software focused on rigging and 3D integration, making it ideal for character animations. In contrast, Pencil is more suited for traditional, hand-drawn animations with a strong emphasis on raster graphics and drawing tools.